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=head2 has-use

  package Example::HasUse;

  use Moo;
  use routines;

  use Data::Object::Attributes;

  has data => (
    is => 'ro',
    use => ['service', 'time']
  );

  method service($type, @args) {
    $self->{serviced} = 1;

    return time if $type eq 'time';
  }

  package main;

  my $example = Example::HasUse->new;

This package supports the C<use> directive denotes that the attribute will be
constructed on-demand, i.e. is lazy, using a custom builder meant to perform
service construction. This directive exists to provide a simple dependency
injection mechanism for class attributes. This ability is not supported by the
L<Moo> object superclass.

=cut

=head2 has-wkr

  package Example::HasWkr;

  use Moo;

  use Data::Object::Attributes;

  has data => (
    is => 'ro',
    wkr => 1
  );

  package main;

  my $data = do {
    my ($a, $b);

    $a = { time => time };
    $b = { time => $a };

    $a->{time} = $b;
    $a
  };

  my $example = Example::HasWkr->new(data => $data);

This package supports the C<wkr> and C<weak_ref> directives is used to denote if
the attribute's value should be weakened. See the L<Moo> documentation for more
details.

=cut

=head2 has-wrt

  package Example::HasWrt;

  use Moo;

  use Data::Object::Attributes;

  has data => (
    is => 'ro',
    wrt => 'set_data'
  );

  package main;

  my $example = Example::HasWrt->new;

This package supports the C<wrt> and C<writer> directives denotes the name of
the method to be used to "write" and return the attribute's value. See the
L<Moo> documentation for more details.

=cut

=head1 AUTHOR

Al Newkirk, C<awncorp@cpan.org>

=head1 LICENSE

Copyright (C) 2011-2019, Al Newkirk, et al.

This is free software; you can redistribute it and/or modify it under the terms
of the The Apache License, Version 2.0, as elucidated in the L<"license
file"|https://github.com/iamalnewkirk/data-object-attributes/blob/master/LICENSE>.

=head1 PROJECT

L<Wiki|https://github.com/iamalnewkirk/data-object-attributes/wiki>

L<Project|https://github.com/iamalnewkirk/data-object-attributes>

L<Initiatives|https://github.com/iamalnewkirk/data-object-attributes/projects>

L<Milestones|https://github.com/iamalnewkirk/data-object-attributes/milestones>

L<Contributing|https://github.com/iamalnewkirk/data-object-attributes/blob/master/CONTRIBUTE.md>

L<Issues|https://github.com/iamalnewkirk/data-object-attributes/issues>

=cut